Commit f0ce3ff4 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm 

Pull KVM fixes from Paolo Bonzini:
 "s390 and POWER bug fixes, plus enabling the KVM-VFIO interface on
  s390"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM doc: Fix KVM_SMI chapter number
  KVM: s390: fix memory overwrites when vx is disabled
  KVM: s390: Enable the KVM-VFIO device
  KVM: s390: fix guest fprs memory leak
  KVM: PPC: Fix ONE_REG AltiVec support
  KVM: PPC: Increase memslots to 512
  KVM: PPC: Book3S PR: Remove unused variable 'vcpu_book3s'
  KVM: PPC: Fix emulation of H_SET_DABR/X on POWER8
  KVM: PPC: Book3S HV: Handle unexpected traps in guest entry/exit code better
parents 119ae9b7 ed8e5a24

Documentation/virtual/kvm/api.txt

+1 −1
Original line number Diff line number Diff line
@@ -3025,7 +3025,7 @@ len must be a multiple of sizeof(struct kvm_s390_irq). It must be > 0 
and it must not exceed (max_vcpus + 32) * sizeof(struct kvm_s390_irq),

which is the maximum number of possibly pending cpu-local interrupts.



4.90 KVM_SMI

4.96 KVM_SMI



Capability: KVM_CAP_X86_SMM

Architectures: x86

arch/powerpc/include/asm/kvm_host.h

+1 −2
Original line number Diff line number Diff line
@@ -38,8 +38,7 @@ 


#define KVM_MAX_VCPUS		NR_CPUS

#define KVM_MAX_VCORES		NR_CPUS

#define KVM_USER_MEM_SLOTS 32

#define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS

#define KVM_USER_MEM_SLOTS	512



#ifdef CONFIG_KVM_MMIO

#define KVM_COALESCED_MMIO_PAGE_OFFSET 1

arch/powerpc/kvm/book3s_64_mmu.c

+0 −3
Original line number Diff line number Diff line
@@ -377,15 +377,12 @@ no_seg_found: 


static void kvmppc_mmu_book3s_64_slbmte(struct kvm_vcpu *vcpu, u64 rs, u64 rb)

{

	struct kvmppc_vcpu_book3s *vcpu_book3s;

	u64 esid, esid_1t;

	int slb_nr;

	struct kvmppc_slb *slbe;



	dprintk("KVM MMU: slbmte(0x%llx, 0x%llx)\n", rs, rb);



	vcpu_book3s = to_book3s(vcpu);



	esid = GET_ESID(rb);

	esid_1t = GET_ESID_1T(rb);

	slb_nr = rb & 0xfff;

arch/powerpc/kvm/book3s_hv.c

+18 −0
Original line number Diff line number Diff line
@@ -833,6 +833,24 @@ static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu, 


	vcpu->stat.sum_exits++;



	/*

	 * This can happen if an interrupt occurs in the last stages

	 * of guest entry or the first stages of guest exit (i.e. after

	 * setting paca->kvm_hstate.in_guest to KVM_GUEST_MODE_GUEST_HV

	 * and before setting it to KVM_GUEST_MODE_HOST_HV).

	 * That can happen due to a bug, or due to a machine check

	 * occurring at just the wrong time.

	 */

	if (vcpu->arch.shregs.msr & MSR_HV) {

		printk(KERN_EMERG "KVM trap in HV mode!\n");

		printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n",

			vcpu->arch.trap, kvmppc_get_pc(vcpu),

			vcpu->arch.shregs.msr);

		kvmppc_dump_regs(vcpu);

		run->exit_reason = KVM_EXIT_INTERNAL_ERROR;

		run->hw.hardware_exit_reason = vcpu->arch.trap;

		return RESUME_HOST;

	}

	run->exit_reason = KVM_EXIT_UNKNOWN;

	run->ready_for_interrupt_injection = 1;

	switch (vcpu->arch.trap) {

arch/powerpc/kvm/book3s_hv_rmhandlers.S

+3 −1
Original line number Diff line number Diff line
@@ -2153,7 +2153,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) 


	/* Emulate H_SET_DABR/X on P8 for the sake of compat mode guests */

2:	rlwimi	r5, r4, 5, DAWRX_DR | DAWRX_DW

	rlwimi	r5, r4, 1, DAWRX_WT

	rlwimi	r5, r4, 2, DAWRX_WT

	clrrdi	r4, r4, 3

	std	r4, VCPU_DAWR(r3)

	std	r5, VCPU_DAWRX(r3)
@@ -2404,6 +2404,8 @@ machine_check_realmode: 
	 * guest as machine check causing guest to crash.

	 */

	ld	r11, VCPU_MSR(r9)

	rldicl.	r0, r11, 64-MSR_HV_LG, 63 /* check if it happened in HV mode */

	bne	mc_cont			/* if so, exit to host */

	andi.	r10, r11, MSR_RI	/* check for unrecoverable exception */

	beq	1f			/* Deliver a machine check to guest */

	ld	r10, VCPU_PC(r9)

CRA Git | Maintained and supported by SUSTech CRA and CCSE